If human bodies were sustainable over an infinite period, then eventually the brain would grind itself to a halt running out of space for storing memories. The elderly, even without brain deterioration, often have difficulty remembering recent events due to the over abundence of past ones.

All people would thusly starve to death collapsed in a timeless memory reverie. Over the course of starving, the brain would deteriorate until one was having hallucinations within memories. Not very pretty.

You're describing my everyday life. I have little to no memory in general. Actually, with a bit of research I found that commonly goes hand in hand with depression.

I don't have an abundance of any memories.

But anyway, I was expecting that, if I didn't die, we'd get to a stage quite shortly where I could download by brain into a giant robot not unlike the dreaded Spambots in my pic and I could go on the warpath and battle huge space creatures.